<template>
  <div>
    <!-- 面包屑导航区域 -->
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>用户管理</el-breadcrumb-item>
      <el-breadcrumb-item>用户列表</el-breadcrumb-item>
    </el-breadcrumb>

    <!-- 卡片视图区域 -->
    <el-card>
      <!-- 搜索与添加区域 -->
      <el-row :gutter="20">
        <el-col :span="8">
          <el-input placeholder="请输入内容" v-model="queryInfo.username" clearable @clear="getUserList">
            <el-button slot="append" icon="el-icon-search" @click="getUserList"></el-button>
          </el-input>
        </el-col>
        <el-col :span="8">
          <el-button type="primary" @click="addDialogVisible = true">添加用户</el-button>
          <!-- <el-button type="danger" @click="console.log()">批量删除</el-button> -->
        </el-col>
      </el-row>

      <!-- 用户列表区域 -->
      <el-table :data="userlist" border stripe>
        <!-- <el-table-column type="selection"></el-table-column> -->
        <el-table-column type="index"></el-table-column>
        <el-table-column label="姓名" prop="username"></el-table-column>
        <el-table-column label="密码" prop="password"></el-table-column>
        <el-table-column label="性别" prop="sex">
          <template slot-scope="scope">{{ scope.row.sex | sexTrans }}</template>
        </el-table-column>
        <el-table-column label="birth" prop="birth"></el-table-column>
        <el-table-column label="操作" width="180px">
          <template slot-scope="scope">
            <!-- 修改按钮 -->
            <el-tooltip effect="dark" content="编辑用户" placement="top" :enterable="false">
              <el-button
                type="primary"
                icon="el-icon-edit"
                size="mini"
                @click="showEditDialog(scope.row.id)"
              ></el-button>
            </el-tooltip>
            <!-- 删除按钮 -->
            <el-button
              type="danger"
              icon="el-icon-delete"
              size="mini"
              @click="removeUserById(scope.row.id)"
            ></el-button>
          </template>
        </el-table-column>
      </el-table>

      <!-- 分页区域 -->
      <el-pagination
        @size-change="handleSizeChange"
        @current-change="handleCurrentChange"
        :current-page="queryInfo.page"
        :page-sizes="[1, 2, 5, 10]"
        :page-size="queryInfo.limit"
        layout="total, sizes, prev, pager, next, jumper"
        :total="total"
      ></el-pagination>
    </el-card>

    <!-- 添加用户的对话框 -->
    <el-dialog title="添加用户" :visible.sync="addDialogVisible" width="50%" @close="addDialogClosed">
      <!-- 内容主体区域 -->
      <el-form :model="addForm" :rules="FormRules" ref="addFormRef" label-width="90px">
        <el-form-item label="用户名" prop="username">
          <el-input v-model="addForm.username"></el-input>
        </el-form-item>
        <el-form-item label="密码" prop="password">
          <el-input v-model="addForm.password" show-password></el-input>
        </el-form-item>
        <el-form-item label="性别" prop="sex">
           <el-radio-group v-model="addForm.sex">
            <el-radio label="M">男</el-radio>
            <el-radio label="F">女</el-radio>
           </el-radio-group>
        </el-form-item>
        <el-form-item label="出生日期" prop="birth">
          <el-date-picker
            v-model="addForm.birth"
            type="date"
            placeholder="选择日期"
            value-format="yyyy-MM-dd">
          </el-date-picker>
        </el-form-item>
      </el-form>
      <!-- 底部区域 -->
      <span slot="footer" class="dialog-footer">
        <el-button @click="addDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="addUser">确 定</el-button>
      </span>
    </el-dialog>

    <!-- 修改用户的对话框 -->
    <el-dialog title="修改用户" :visible.sync="editDialogVisible" width="50%" @close="editDialogClosed">
      <el-form :model="editForm" :rules="FormRules" ref="editFormRef" label-width="70px">
        <el-form-item label="用户名">
          <el-input v-model="editForm.username" disabled></el-input>
        </el-form-item>
        <el-form-item label="密码" prop="password">
          <el-input v-model="editForm.password" show-password></el-input>
        </el-form-item>
        <el-form-item label="性别" prop="sex">
           <el-radio-group v-model="editForm.sex">
            <el-radio label="M">男</el-radio>
            <el-radio label="F">女</el-radio>
           </el-radio-group>
        </el-form-item>
        <el-form-item label="出生日期" prop="birth">
          <el-input v-model="editForm.birth"></el-input>
        </el-form-item>
      </el-form>
      <span slot="footer" class="dialog-footer">
        <el-button @click="editDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="editUserInfo">确 定</el-button>
      </span>
    </el-dialog>
  </div>
</template>

<script>
export default {
  data() {
    return {
      // 获取用户列表的参数对象
      queryInfo: {
        username: '',
        // 当前的页数
        page: 1,
        // 当前每页显示多少条数据
        limit: 2
      },
      userlist: [],
      total: 0,
      // 控制添加用户对话框的显示与隐藏
      addDialogVisible: false,
      // 添加用户的表单数据
      addForm: {
        username: '',
        password: '',
        sex: 'M',
        birth: ''
      },
      // 添加表单的验证规则对象
      FormRules: {
        username: [
          { required: true, message: '请输入用户名', trigger: 'blur' },
          { min: 3, max: 10, message: '用户名的长度在3~10个字符之间', trigger: 'blur' }
        ],
        password: [
          { required: true, message: '请输入密码', trigger: 'blur' },
          { min: 6, max: 15, message: '用户名的长度在6~15个字符之间', trigger: 'blur' }
        ],
        birth: [
          { required: true, message: '请选择出生日期', trigger: 'blur' }
        ]
      },
      // 控制修改用户对话框的显示与隐藏
      editDialogVisible: false,
      // 查询到的用户信息对象
      editForm: {}
    }
  },
  created() {
    this.getUserList()
  },
  methods: {
    async getUserList() {
      const { data: res } = await this.axios.get('users', {
        params: this.queryInfo
      })
      if (res.status !== 200) {
        return this.$message.error('获取用户列表失败！')
      }
      this.userlist = res.data.records
      this.total = parseInt(res.data.total)
    },
    // 监听 limit 改变的事件
    handleSizeChange(newSize) {
      // console.log(newSize)
      this.queryInfo.limit = newSize
      this.getUserList()
    },
    // 监听 页码值 改变的事件
    handleCurrentChange(newPage) {
      console.log(newPage)
      this.queryInfo.page = newPage
      this.getUserList()
    },
    // 监听添加用户对话框的关闭事件
    addDialogClosed() {
      this.$refs.addFormRef.resetFields()
    },
    // 点击按钮，添加新用户
    addUser() {
      this.$refs.addFormRef.validate(async(valid) => {
        if (!valid) return
        // 可以发起添加用户的网络请求
        const { data: res } = await this.axios.post('users', this.addForm)

        if (res.status !== 200) {
          this.$message.error('添加用户失败！')
        }

        this.$message.success('添加用户成功！')
        // 隐藏添加用户的对话框
        this.addDialogVisible = false
        // 重新获取用户列表数据
        this.getUserList()
      })
    },
    // 展示编辑用户的对话框
    async showEditDialog(id) {
      // console.log(id)
      const { data: res } = await this.axios.get('users/' + id)

      if (res.status !== 200) {
        return this.$message.error('查询用户信息失败！')
      }

      this.editForm = res.data
      this.editDialogVisible = true
    },
    // 监听修改用户对话框的关闭事件
    editDialogClosed() {
      this.$refs.editFormRef.resetFields()
    },
    // 修改用户信息并提交
    editUserInfo() {
      this.$refs.editFormRef.validate(async(valid) => {
        if (!valid) return
        // 发起修改用户信息的数据请求
        const { data: res } = await this.axios.put(
          'users/' + this.editForm.id, this.editForm
        )

        if (res.status !== 200) {
          return this.$message.error('更新用户信息失败！')
        }

        // 关闭对话框
        this.editDialogVisible = false
        // 刷新数据列表
        this.getUserList()
        // 提示修改成功
        this.$message.success('更新用户信息成功！')
      })
    },
    // 根据Id删除对应的用户信息
    async removeUserById(id) {
      // 弹框询问用户是否删除数据
      const confirmResult = await this.$confirm(
        '此操作将永久删除该用户, 是否继续?',
        '提示',
        {
          confirmButtonText: '确定',
          cancelButtonText: '取消',
          type: 'warning'
        }
      ).catch((err) => err)

      // 如果用户确认删除，则返回值为字符串 confirm
      // 如果用户取消了删除，则返回值为字符串 cancel
      // console.log(confirmResult)
      if (confirmResult !== 'confirm') {
        return this.$message.info('已取消删除')
      }

      const { data: res } = await this.axios.delete('users/' + id)

      if (res.status !== 200) {
        return this.$message.error('删除用户失败！')
      }

      this.$message.success('删除用户成功！')
      this.getUserList()
    }
  },
  filters: {
    sexTrans: (sex) => (sex === 'M' ? '男' : '女')
  }
}
</script>

<style lang="less" scoped>
</style>
